Hey Callisto -
I've been lurking here for a bit and have appreciated your detailed posts - so thanks

!
I'm getting ready to do a fluid and filter change on our '17 CX-5 transmission and am interested in your opinion... Car has 65K on it...
Am considering using the Castrol Transmax fluid (instead of Mazda FZ) and changing the filter on the first go. I would then do two more fluid-only changes with Transmax.
My question is - would you immediately proceed to do the fluid change 2X more so that most of the fluid is Castrol immediately or ... would it be crazy to do the next two fluid changes (with Transmax) at the next two oil changes (5K mile intervals)?
I do my own work, so I can go either way, but spacing it out would probably be a bit easier.
Thanks in advance,
Steve